Phys 104 HW#1 Due Thurs. Sept. 7, 2000

This homework set is meant to test out some basic math skills.

Each problem is 2 points.

1. (3x2)3 = ? (expand out)

2. (a + 2b)3 = ? (expand out)

3. Which number is bigger, 27 or 25?

4. Which number is bigger, (1/2)7 or (1/2)5?

5. 104 + 103 = ?

6. 103/105 = ?

7.  ?

8. (101/3)6 = ?

9. 3x + 2 = 5. Solve for x.

10. 3x + 2y = 5, and 2x + y = 3. Solve for x and y.

11. Which of the following points (x,y) is NOT on the curve determined by the equation:

a)    (0,1)       b)    (1,2)          c)    (2,1/5)           d)    (3,1/10)

12.  ?

a)    -(x + 2)/3       b) /3        c)    x + 2/3           d) /3

[Hint: Replace  by y]

13. What is the range of x for which (x2 - 9x)  0?

a)    x  -9         b)    x  9       c)    0  9        d)    x  0, and x  9